CN103081334B - There is the inverter of the AC interface connected for AC module - Google Patents
There is the inverter of the AC interface connected for AC module Download PDFInfo
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- CN103081334B CN103081334B CN201180040268.2A CN201180040268A CN103081334B CN 103081334 B CN103081334 B CN 103081334B CN 201180040268 A CN201180040268 A CN 201180040268A CN 103081334 B CN103081334 B CN 103081334B
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- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02J—CIRCUIT ARRANGEMENTS OR SYSTEMS FOR SUPPLYING OR DISTRIBUTING ELECTRIC POWER; SYSTEMS FOR STORING ELECTRIC ENERGY
- H02J3/00—Circuit arrangements for ac mains or ac distribution networks
- H02J3/38—Arrangements for parallely feeding a single network by two or more generators, converters or transformers
- H02J3/381—Dispersed generators
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- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02J—CIRCUIT ARRANGEMENTS OR SYSTEMS FOR SUPPLYING OR DISTRIBUTING ELECTRIC POWER; SYSTEMS FOR STORING ELECTRIC ENERGY
- H02J3/00—Circuit arrangements for ac mains or ac distribution networks
- H02J3/38—Arrangements for parallely feeding a single network by two or more generators, converters or transformers
- H02J3/40—Synchronising a generator for connection to a network or to another generator
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- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02J—CIRCUIT ARRANGEMENTS OR SYSTEMS FOR SUPPLYING OR DISTRIBUTING ELECTRIC POWER; SYSTEMS FOR STORING ELECTRIC ENERGY
- H02J3/00—Circuit arrangements for ac mains or ac distribution networks
- H02J3/38—Arrangements for parallely feeding a single network by two or more generators, converters or transformers
- H02J3/46—Controlling of the sharing of output between the generators, converters, or transformers
- H02J3/50—Controlling the sharing of the out-of-phase component
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- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02M—APPARATUS FOR CONVERSION BETWEEN AC AND AC, BETWEEN AC AND DC, OR BETWEEN DC AND DC, AND FOR USE WITH MAINS OR SIMILAR POWER SUPPLY SYSTEMS; CONVERSION OF DC OR AC INPUT POWER INTO SURGE OUTPUT POWER; CONTROL OR REGULATION THEREOF
- H02M7/00—Conversion of ac power input into dc power output; Conversion of dc power input into ac power output
- H02M7/42—Conversion of dc power input into ac power output without possibility of reversal
- H02M7/44—Conversion of dc power input into ac power output without possibility of reversal by static converters
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- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02J—CIRCUIT ARRANGEMENTS OR SYSTEMS FOR SUPPLYING OR DISTRIBUTING ELECTRIC POWER; SYSTEMS FOR STORING ELECTRIC ENERGY
- H02J2300/00—Systems for supplying or distributing electric power characterised by decentralized, dispersed, or local generation
- H02J2300/20—The dispersed energy generation being of renewable origin
- H02J2300/22—The renewable source being solar energy
- H02J2300/24—The renewable source being solar energy of photovoltaic origin
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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02E—REDUCTION OF GREENHOUSE GAS [GHG] EMISSIONS, RELATED TO ENERGY GENERATION, TRANSMISSION OR DISTRIBUTION
- Y02E10/00—Energy generation through renewable energy sources
- Y02E10/50—Photovoltaic [PV] energy
- Y02E10/56—Power conversion systems, e.g. maximum power point trackers
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- Engineering & Computer Science (AREA)
- Power Engineering (AREA)
- Supply And Distribution Of Alternating Current (AREA)
- Inverter Devices (AREA)
- Rectifiers (AREA)
Abstract
Describing a kind of inverter (20) for the AC voltage supply that electrical network is compatible to electrical network (40), wherein, described inverter includes: inverter bridge (21), and described inverter bridge (21) for converting an AC voltage to by D/C voltage；And, grid interface (30), described grid interface (30) is positioned between described inverter bridge (21) and described electrical network (40) for a described AC voltage converts to the AC voltage of electrical network compatibility, to be fed to described electrical network (40).Between described inverter bridge (21) and described grid interface (30), arrange AC interface (60), be connected to the AC module (50) for being fed to described electrical network (40) via described AC interface (60).
Description
Technical field
The present invention relates to for that intensively change and by the inverter of AC voltage supply compatible for electrical network to electrical network.
Background technology
Traditional photovoltaic (PV) inverter, such as central authorities or string inverter or there is the inverter of multiple parallel string, except the direct current that PV TRT produces is converted to this main task of exchange that electrical network is compatible, also perform much other functions.Wherein, these other functions may is that
Via HMI (man-machine interface) or via other communication channel and telex network
Electrical network function for monitoring
Electrical network supports function
Security function
Additionally, make PV TRT be maintained at maximum power point place by MPPT maximum power point tracking (MPP tracking).
Meanwhile, the size of PV TRT is generally controlled by the nominal power of inverter, thus the scalability of the overall photovoltaic system of restriction.
Owing to the characteristic that the electric current in string is the PV module the most weak by it controls, constructed equal modules or module similar as far as possible therefore should be used in this string.
If the incident radiation on (owing to part is covered) PV TRT is not uniform, so cannot extract maximum possible power from PV TRT, because PV module has different optimum operating points (MPP), serial or parallel connection circuit cannot set these operation points individually.
There is many shortcomings in traditional PV inverter, such as, restricted scalability, the various restrictions occurred when different types of module is used together and the high susceptibility to uneven incident radiation, but it is considered inverter that closely module, module oriented approach or module are integrated (that is when using, there is the MPP for each module of AC output and the their own special inverter followed the tracks of, this is also referred to as AC module hereinafter) time, almost can avoid these shortcomings completely.But, if attempting all to be integrated in AC module by other function mentioned when starting, then concrete price (cost relevant to power) is significantly higher than the price of traditional PV inverter.Additionally, effect of AC module generally can not reach effect of traditional PV inverter.Up to now, this causes successfully AC module to be introduced market.
Summary of the invention
Accordingly, it is desirable to provide a kind of system, this system in combination advantage of both technology.Thus, one aspect of the present invention relates to the AC interface being integrated in inverter, is fed to electrical network via this AC interface from the power of connected distributing AC module.Hereinafter, this inverter is also referred to as basis inverter.This only results in less extra cost, the cost of distributing AC module can be significantly decreased simultaneously, because the function of these AC modules can be reduced to the basic function of such as inversion and MPP tracking etc, and the power proportions that other function above-mentioned is produced for AC module by basis inverter provides.
This makes to install for PV can use almost all of building position better.Specifically, system code like this is close to the variant substantially calculated than DC/DC controller of module, so-called power optimization device.
It is an object of the invention to provide a kind of inverter for photovoltaic system, this inverter section ground or fully meet claimed below and following functions is provided:
Convert the direct current that PV TRT in photovoltaic system produces to exchange that electrical network is compatible
The MPP optimized by module follows the tracks of
Energy-efficient
Low concrete price
The communication via standard HMI between system and user
Electrical network function for monitoring
Electrical network supports function
Adjustable reactive power (supply, benchmark, compensation)
Security function
The scalability of the simple and flexible of PV TRT
A photovoltaic system uses different PV TRT types and technology (such as, hull cell and monocrystalline silicon battery)
It is subject to the energy-optimised use of the PV TRT of uneven irradiation (owing to covering, different module alignment, etc.)
Can using and have electric isolution or do not have the PV inverter of electric isolution, in this case, both types can use in identical photovoltaic system
According to the first aspect of the invention, this purpose is realized by inverter, and wherein, described inverter includes: inverter bridge, and described inverter bridge for converting an AC voltage to by D/C voltage；And, grid interface, the AC voltage that described grid interface is compatible for a described AC voltage converts to electrical network between described inverter bridge and electrical network, to be fed to described electrical network.Between described inverter bridge and described grid interface, arrange AC interface, be connected to the one or more AC modules for being fed to described electrical network via described AC interface.
Have been found that almost each installation has a part of TRT region being all freely subject to uniform irradiation within 1 year most of the time, and not by the obstruction of the barrier of cast shadow.Installing for rural area, this part typically represents whole region.This part reduces along with the increase in the region of the barrier impact that is masked.One typical example is the roof area with skylight, this region in the process of a day in some time by shadow-casting to installing on nigh PV TRT.But, only in very rare situations, the TRT region more than 50% is affected.Therefore, the areas combine being worth the TRT by being freely subject to uniform irradiation gets up form a unit and can intensively change power in an inverter.This is best solution with regard to energy and cost of investment.
Distributing power adjustments close to module is being best solution with power related aspect (energetically) for the part not being uniformly illuminated in some time.Specifically, it is possible to by AC module for this purpose, because AC module can perform MPP independently of one another and follow the tracks of.Calculate as much as possible for making AC module be designed to and save the energy, it is desirable to the design of these equipment is simplified to the basic function of some necessity.This allows to obviously better utilize existing roof area, because those region parts not being used effectively when using previous system architecture become practical in this manner.
According to the present invention, inverter is extended so that one or more AC modules can be connected to this inverter by AC interface.This basic function allowing to simplify AC module, even if thus when be not allowed for feed power to electric power network AC module also be able to when being directly connected to AC module is included in overall photovoltaic system.
Obviously, by the conversion of the compatible AC voltage of the conversion of the D/C voltage of inverter bridge to an AC voltage and an AC voltage to electrical network along with DC electric current to the conversion of an AC electric current and further to the conversion of the compatible AC electric current of electrical network.From this meaning, in the present invention, the use of term " voltage " is not restrictive.
In an embodiment of inverter, grid interface has for making inverter disconnect from electrical network and/or inverter being connected to the on-load switch (switchdisconnector) of electrical network.In particular it is preferred that depend on that the state of electrical network carrys out operational load switch.It may further be preferable that the state of electrical network relates to the frequency of the electric current in electrical network and/or voltage and/or isolated island condition (islandingcondition).On-load switch is for controlling the form with electrical network compatibility by the device of power feed to electrical network.
In another embodiment of inverter, grid interface has filter apparatus.This filter apparatus is used to form the AC voltage of similar sine, for feed power to electrical network.This filter apparatus is also for ensuring that the form with electrical network compatibility is by the device of power feed to electrical network.
In another embodiment of inverter, grid interface has safety equipment.In another embodiment of inverter, inverter has measurement point, measures point by these and can record the current value via inverter bridge and the current value via AC interface.Safety equipment and measurement point allow to control power feed to electrical network in the way of electrical network is compatible.
In another embodiment of inverter, inverter has the communication unit for exchanging data with the AC module being connected to AC interface.In particular it is preferred that this communication unit is designed to the circuit via AC interface to exchange data or to be designed to exchange wirelessly data.It may further be preferable that this communication unit is designed to exchange data for one of following purpose:
-remotely control or remotely diagnose the AC module connected；
The measured value of AC module, collapse or the fault that-storage or transmission connect；
-send a control signal to the AC module of connection；
-on the display unit of inverter, show the data of AC module of connection.
Communication unit allows all modules (that is, being connected to the AC module of inverter via AC interface) of photovoltaic system are carried out control and the supervision of entirety.
Accompanying drawing explanation
Hereinafter, exemplary embodiment and with reference to the accompanying drawings to describe the present invention will be used.Diagrammatic accompanying drawing is understood to illustrative rather than restrictive, and is intended to so that the present invention is easier to understand.In this case:
Fig. 1 illustrates the indicative icon of conventional inverter；
Fig. 2 illustrates the indicative icon of the conventional inverter with grid interface；
Fig. 3 illustrates the first embodiment of the inverter according to the present invention；
Fig. 4 illustrates the second embodiment of the inverter according to the present invention；
Fig. 5 to Fig. 7 illustrates the other embodiments of the inverter according to the present invention, wherein, arranges various measurement point at inverter internal；And
Fig. 8 and Fig. 9 illustrates the more embodiment of the inverter according to the present invention.
Accompanying drawing explanation
Fig. 1 illustrates the photovoltaic system 100 with conventional inverter 19.Inverter 19 has inverter bridge 21, can convert the direct current from the PV TRT 10 connected to exchange by this inverter bridge 21.Inverter bridge 21 is connected to electrical network 40, for effective power PinvAnd reactive power QinvForm feeding PV TRT produce power.Can monitoring by measuring point 24 via central processing unit (CPU) 22, synchronize and control this feeding, wherein, these are measured point 24 and are designed to measure electric current and/or magnitude of voltage.In this case, PV TRT 10 includes the PV module of multiple series connection, and the PV module of these multiple series connection forms string.Often, multiple connection in series-parallel, and it is connected to inverter.
The more optional element of conventional inverter 19 is shown in the photovoltaic system 100 of Fig. 2.This inverter 19 also has HMI23, can show the operating value of inverter 19 by means of this HMI23, and it is possible to such as by for the effective power P that will be provided by systemrefAnd/or reactive power QrefPreset nominal value 28 carrys out the operation of influential system 100.As selection, it is also possible to via communication unit 26, these nominal values 28 are such as transmitted as the value that the operator by electrical network 40 are preset.Inverter 19 also has grid interface 30, and additional function mentioned above can be provided via this grid interface 30 by inverter.Grid interface 30 preferably comprises electromechanics or electronics on-load switch 32, so as to make basis inverter disconnect from electrical network 40.Safety equipment 30 perform security function, for instance, the detection of voltage, frequency and isolated fault and (to various types of current sense) fault current monitor or undesirable island effect.In this case, each single parts of grid interface 30 can intensively be connected to CPU22, and by CPU22 control, or connect directly with one another.
Fig. 3 illustrates an embodiment of the basic inverter 20 according to the present invention.Basis inverter 20 is connected to AC module 50 by AC interface 60 via join domain 65, and this AC interface is integrated in the inverter 20 of basis and is disposed between inverter bridge 21 and grid interface 30.Shown basic inverter 20 also has measurement point 61, and this measurement point 61 is used to optionally determine the electric current that AC module 50 is fed to.Thus, it is possible to realize being suitable for the PV system configuration of requirements mentioned above.Join domain 65 can have the one or more connections for AC module 50, and in this case, one or more AC modules 50 can be connected to each and connect.In this manner it is achieved that similarly, the AC module 50 of connection can be protected by grid interface 30, without in person performing the defencive function that grid interface 30 provides.On-load switch 32 in grid interface 30 is that the general power for system 100 designs, and therefore, AC module 50 does not need the grid interface of their own or the on-load switch of their own.Basis inverter 20 can be designed to not have the inverter of transformator, have the inverter of high frequency transformer or have the inverter of network transformer.
Basic inverter 20 in Fig. 4 has the communication unit 26 being designed to radio communication (such as, radio is launched).In this case, communication unit 26 can communicate with AC module 50 via the communication unit 51 of AC module 50 in a straightforward manner, in order to unidirectional or bidirectionally transmit data, or to control or to monitor AC module 50.As selection, certainly, this communication can also provide via dedicated signal lines or by the modulation to AC circuit.HMI23 can to perform to control and display function for AC module 50 via the control of basis inverter and display element.Remote evaluation, remotely diagnosis can be provided via the communication unit 26 of basis inverter 20 for AC module 50 and/or remotely control.It is likewise possible to the measured value of storage or transmission AC module 50 or logout (such as, collapse or fault).It is also feasible that to AC module 50 transmission of control signals connected.
So that the feeding parameter of inverter bridge 21 and the feeding parameter of the AC module 50 of connection can be individually determined, compared with the conventional inverter 19 in Fig. 1 and Fig. 2, it is provided that more measure a little.In fig. 3 and in fig. 5, provide between AC interface 60 and grid interface 30 another measure point 61, in order to extraly allow to record inverter bridge 21 and AC interface 60 and electric current.Thus, it is possible to make it easy the electric current mark of AC interface 60 is determined on ground by subtraction.
As selection, Fig. 6 illustrates the extra measurement point 62 for determining different electric current marks in the current path of AC interface 60.Measure point another replacement arrange (not shown) can be used to measure the total current of AC module 50 connected and total system 100 and electric current, and be used to determine the electric current mark of inverter bridge 21 according to this measurement result.
As shown in Figure 7, each connection of junction point 65 can also equipped with measuring point 63, in order to the electric current mark from the AC module 50 being connected to AC interface 60 carries out selectivity record, and such as is used for installing supervision by this selectivity record.
Additionally, Fig. 5 illustrates the grid interface 30 with filter apparatus 33.Filter apparatus 33 is used to from the AC voltage will be fed to electrical network 40 remove or be adequately suppressed not at the AC component of voltage of mains frequency.Such as, filter apparatus 33 can be the form of LC band filter, and is designed such that it can provide this function for inverter bridge 21 and the AC module 50 connected.As selection, as shown in Figure 7, it is also possible to arrange another filter apparatus 34 between join domain 65 and AC interface 60, the AC module 50 selectively connected provides filter function.
As add ons, Fig. 6 also show the off device 67 of each connection for join domain 65.This can be controlled by basis transducer 20 so that the inverter being connected to corresponding connection optionally disconnects from AC interface 60 by switching.In operational variation, it is able to record that feeding parameter in this manner or performs the diagnosis to the AC module 50 connected individually for the corresponding module group or AC module 50 that are connected to various connection so that being measured point 61 measured value determined with 62 by another can associate with AC module 50 or AC module group.As selection, it is also possible to provide a single off device 67, in order to disconnect the AC module 50 of all of connection.This off device can be integrated in all embodiments illustrated of the inverter according to the present invention.
One connection of join domain 65 is used as benchmark input, and can record its electric current or feed power individually.Then, being worth, the PV module being connected to AC module 50 is installed at the some place covered by barrier never in PV installs, and also is worth, and corresponding AC module is connected to benchmark input.Thus, it is possible to the concrete power of assessment base modules and residue install the difference between the concrete power of (or part of residue installation).
Another selection of the purposes of the basic inverter 20 according to the present invention is the PFC for load.For this purpose, except (optionally) AC module 50, at least one load is also had to be connected to AC interface 60.Basis inverter 20 can produce a reactive power for load self-demand via the measurement point of input and electrical network junction so that overall photovoltaic system 100 operates with neutral form on electrical network.
Can receive for effective power P via the communication unit 26 of basis inverter 20refWith for reactive power QrefNominal value 28, and nominal value 28 is proceeded to CPU22, so as to regulate output effective power and the reactive power of system 100 as required.This makes it possible to achieve grid service, although AC module 50 self does not necessarily have the ability providing reactive power.It is enough by the feed unit that basis inverter 20 is designed to be able to provide reactive power.
Similarly, above statement is applied similarly to three-phase system；The basic inverter with AC interface according to the present invention may be used for single-phase or polyphase electrical system in this manner.When polyphase electrical system, perform electric power distribution via the single-phase AC module 50 connected by sharing (split) AC module 50 between various phase places via AC interface 30.Can for connect electrical network 40 by basis inverter 20 as desired to control this electric power distribution.Specifically, it is considered to it is variable for the assignment configuration of AC module to phase place (AC module is fed to these phase places) being become according to the requirement of three phase network, for instance, in order to antagonism unbalanced power supply.
For example, Fig. 8 illustrates the layout of AC interface 60, and wherein, each being connected in three single-phase AC modules connected of join domain 65 is fed in three phase places of basis inverter 20.In this case, all AC modules are connected to the neutral conductor 66 of basis inverter 20.In every case, also another is set for each feed point and measures point 62.As selection, Fig. 9 illustrates following layout, in this arrangement three-phase AC module may be connected in every case three of join domain 65 connect in each.(star arrangement) is arranged in the connection of each AC module between in place of neutral conductor and the phase place of selection, it is also possible that connect AC module (triangular arrangement (deltaarrangement)) between two phase places selected.
By measuring point 24,61,62 and 63 and the algorithm realized in CPU22, monitor the operation of external AC module 50, it is intended that in an operational variation of the present invention, it is not necessary to the communication between AC module 50 and basis inverter 20.Thus, it is possible to design AC module 50 very to one's profitly, because their function can be reduced to inversion and MPP tracking.Although AC module carries out unadjusted feeding, also ensure that to the predetermined feeding parameter with total system 100 (such as, the nominal value of reactive power and effective power) compatible supervision, because of based on inverter 20 can control from the feeding of inverter bridge 21 make on the whole from the feeding of inverter bridge 21 and AC module 50 corresponding to nominal value.This causes that calculate and efficient overall photovoltaic system.It is likewise possible to use basis inverter 20 to monitor the feeder operation of AC module 50, and suitable warning can be produced when there is drawing the difference of deduction that AC module 50 breaks down, send by communication unit 26 or HMI23 or indicate this warning.Without the communication with AC module for this purpose；Can based on these differences of feeding parameter detecting of the AC module being connected to AC interface 60, as mentioned above, can via another measure point 61,62 and 63 optionally record feeding parameter, even if cannot clearly identify in some cases in the AC module of connection which break down.
Basis inverter 20 can equipped with the residual current circuit breaker that all types of electric currents are all sensitive.This makes it possible to be configured without AC module 50 transformer inverter, and need not oneself the safety component that all types of electric currents are all sensitive, still comply with existing safety rule simultaneously.
In a favourable configuration, photovoltaic system 100 be designed such that in TRT region whenever not shielded part is fed in the electrical network 40 of connection via inverter bridge 21.By AC module 50 via AC interface 60 by TRT region at least in some time shielded system that is partly comprised in 100.Generally, part always not shielded in region will constitute the overwhelming majority in total TRT region so that basis inverter 20 is advantageously configured to the peak power that is fed to via inverter bridge 21 at least equally high with the peak power to be fed to via AC interface 60.This makes the parts of basis inverter 20 relatively effectively be used, and utilizes described being used in combination of some parts to reduce the complexity of overall photovoltaic system 100 simultaneously.
Accompanying drawing labelling
10PV TRT
19 inverters
20 basis inverters
21 inverter bridge
22 central processing units (CPU)
23 man-machine interfaces (HMI)
24 measure point
26 communication units
28 nominal values
30 grid interface
31 safety equipment
32 on-load switches
33 filter apparatus
34 filter apparatus
40 electrical networks
50AC module
51 communication units
60AC interface
61 measure point
62 measure point
63 measure point
65 join domains
66 neutral conductors
67 off devices
100 photovoltaic systems
Claims (17)
1. one kind for that intensively change and by the inverter (20) of AC voltage supply compatible for electrical network to electrical network (40), including:
-inverter bridge (21), for converting an AC voltage to by D/C voltage；And
-grid interface (30), AC voltage compatible for a described AC voltage being converted to the electrical network being fed to described electrical network (40) between described inverter bridge (21) and described electrical network (40),
It is characterized in that:
Between described inverter bridge (21) and described grid interface (30), arrange AC interface (60), can be connected to for the MPP with their own being fed to described electrical network (40) the scattered AC module (50) followed the tracks of via described AC interface (60).
2. inverter according to claim 1, it is characterized in that, described grid interface (30) has for making described inverter (20) disconnect from described electrical network (40) and/or described inverter (20) being connected to the on-load switch (32) of described electrical network (40).
3. inverter according to claim 2, it is characterised in that depend on that the state of described electrical network (40) is to operate described on-load switch (32).
4. inverter according to claim 3, it is characterised in that the state of described electrical network (40) relates to the frequency of the electric current in described electrical network (40) and/or voltage and/or isolated island condition.
5. inverter according to claim 1, it is characterised in that described grid interface (30) has filter apparatus (33).
6. inverter according to claim 1, it is characterised in that described grid interface (30) has safety equipment (31).
7. inverter according to claim 1, it is characterized in that, off device (67) is disposed between described AC interface (60) and the join domain (65) being used for being connected to described AC module (50) described inverter (20).
8. inverter according to claim 1, it is characterized in that, described inverter (20) has measurement point (24,61,62,63), via described measurement point (24,61,62,63) current value via described inverter bridge (21) and the current value via described AC interface (60) can be recorded.
9. inverter according to claim 1, it is characterized in that, described inverter (20) is configured such that the peak power being fed to via described inverter bridge (21) is at least equally high with the peak power being fed to via described AC interface (60).
10. inverter according to claim 1, it is characterised in that described inverter bridge (21) can provide reactive power.
11. inverter according to claim 1, it is characterised in that described inverter bridge (21) is designed to provide phase AC voltage.
12. inverter according to claim 11, it is characterised in that described AC interface (60) is designed to distribute the power being fed to by the AC module (50) connected between the phase place of AC voltage.
13. inverter according to claim 1, it is characterised in that described inverter (20) has the communication unit (26) for exchanging data with the AC module (50) being connected to described AC interface (60).
14. inverter according to claim 13, it is characterised in that described communication unit (26) is designed to the circuit-switched data via described AC interface (60).
15. inverter according to claim 13, it is characterised in that described communication unit (26) is designed to exchange wirelessly data.
16. according to inverter any one in claim 13 to 15, it is characterised in that described communication unit (26) is designed to exchange data for one of following purpose:
-remotely control or remotely diagnose the AC module (50) connected；
The measured value of AC module (50), collapse or the fault that-storage or transmission connect；
-send a control signal to the AC module (50) connected；
-on the display unit of described inverter (20), show the data of AC module (50) connected.
17. a photovoltaic system (100), have according to inverter any one in claim 1 to 16.
Applications Claiming Priority (3)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| DE102010036033 | 2010-08-31 | ||
| DE102010036033.3 | 2010-08-31 | ||
| PCT/EP2011/064840 WO2012028589A2 (en) | 2010-08-31 | 2011-08-29 | Inverter with an ac interface for the connection of ac modules |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN103081334A CN103081334A (en) | 2013-05-01 |
| CN103081334B true CN103081334B (en) | 2016-07-06 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201180040268.2A Active CN103081334B (en) | 2010-08-31 | 2011-08-29 | There is the inverter of the AC interface connected for AC module |
Country Status (7)
| Country | Link |
|---|---|
| US (1) | US9401662B2 (en) |
| EP (1) | EP2612433B1 (en) |
| JP (1) | JP5928736B2 (en) |
| CN (1) | CN103081334B (en) |
| DE (1) | DE102011053094A1 (en) |
| TW (1) | TW201216604A (en) |
| WO (1) | WO2012028589A2 (en) |
Families Citing this family (12)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103312187B (en) | 2012-03-09 | 2016-02-03 | 台达电子工业股份有限公司 | A kind of converter system |
| DE102012206584A1 (en) * | 2012-04-20 | 2013-10-24 | Solutronic Ag | Electric subnetwork connectable to a main electrical network |
| DE102012210207A1 (en) | 2012-06-18 | 2013-12-19 | Ge Energy Power Conversion Gmbh | Method and device for feeding electrical power into an electrical power grid |
| DE102012106129B4 (en) * | 2012-07-06 | 2016-03-17 | Cyber Power Systems Inc. | Network connected power supply system |
| US9641021B2 (en) * | 2013-01-31 | 2017-05-02 | General Electric Company | Photovoltaic power generation system including apparatus and method to buffer power fluctuations |
| CN104134968B (en) * | 2014-08-05 | 2017-04-12 | 南京南瑞继保电气有限公司 | Protection method and system for unified power flow controller |
| DE102014119502B3 (en) * | 2014-12-23 | 2016-03-24 | Sma Solar Technology Ag | Grid connected inverter, inverter arrangement and operating method for an inverter arrangement |
| US9543859B2 (en) | 2015-01-23 | 2017-01-10 | Suzan EREN | System and method for active/reactive power compensation |
| CN105322536B (en) * | 2015-10-23 | 2018-06-26 | 深圳供电局有限公司 | Protection configuration method of typical multi-terminal flexible direct current power distribution system |
| KR101898587B1 (en) * | 2016-05-04 | 2018-09-13 | 엘지전자 주식회사 | Photovoltaic module and photovoltaic system including the same |
| US10727669B2 (en) | 2017-01-27 | 2020-07-28 | Duke Energy Corporation | Apparatuses including power electronics circuitry, and related methods of operation |
| DE102017102771A1 (en) * | 2017-02-13 | 2018-08-16 | Sma Solar Technology Ag | Method for determining the maximum possible power of a PV system and PV system |
Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1529930A (en) * | 2001-10-01 | 2004-09-15 | ������������ʽ���� | Power conversion apparatus, Power conversion system and islanding operation method |
| CN101494385A (en) * | 2009-02-18 | 2009-07-29 | 常州瑞闪新能源有限公司 | Solar photovoltaic parallel inverter control system based on LCL filtering |
Family Cites Families (22)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH041061A (en) | 1990-04-18 | 1992-01-06 | Matsushita Electric Ind Co Ltd | Heat sensitive recording head |
| JPH10201105A (en) * | 1997-01-14 | 1998-07-31 | Nissin Electric Co Ltd | Photovoltaic power generation system |
| DE29916195U1 (en) | 1999-09-15 | 1999-12-30 | Karschny Dietrich | Modular inverter |
| JP4857486B2 (en) * | 2001-05-10 | 2012-01-18 | 三菱電機株式会社 | Grid interconnection inverter |
| AU2002348084A1 (en) * | 2001-10-25 | 2003-05-06 | Sandia Corporation | Alternating current photovoltaic building block |
| JP2003135983A (en) * | 2001-11-06 | 2003-05-13 | Showa Denko Kk | Impact type crusher |
| WO2004100344A2 (en) * | 2003-05-02 | 2004-11-18 | Ballard Power Systems Corporation | Method and apparatus for tracking maximum power point for inverters in photovoltaic applications |
| JP2006050740A (en) * | 2004-08-03 | 2006-02-16 | Canon Inc | Power conversion equipment, ac module, and photovoltaic power generation system |
| JP4606935B2 (en) * | 2004-09-13 | 2011-01-05 | 株式会社ダイヘン | Control method of photovoltaic power generation system |
| AT501422B1 (en) | 2005-02-10 | 2009-05-15 | Fronius Int Gmbh | INVERTER SYSTEM FOR INPUT IN A 3-PHASE NETWORK AND INVERTER SYSTEM FOR A 3-PHASE NETWORK |
| DE102005032864B4 (en) * | 2005-07-14 | 2011-04-14 | Sma Solar Technology Ag | Method for finding a maximum power of a photovoltaic generator |
| US8618692B2 (en) * | 2007-12-04 | 2013-12-31 | Solaredge Technologies Ltd. | Distributed power system using direct current power sources |
| US8013472B2 (en) * | 2006-12-06 | 2011-09-06 | Solaredge, Ltd. | Method for distributed power harvesting using DC power sources |
| US20090000654A1 (en) * | 2007-05-17 | 2009-01-01 | Larankelo, Inc. | Distributed inverter and intelligent gateway |
| JP4749433B2 (en) * | 2008-01-22 | 2011-08-17 | 株式会社日立製作所 | Distributed power supply system and control method thereof |
| EP2104216A1 (en) | 2008-03-20 | 2009-09-23 | Ansaldo Sistemi Industriali S.p.A. | Electric power generating system with a plurality of electric power sources parallely feeding a DC voltage line which supplies power to an AC grid |
| US7929324B1 (en) * | 2008-04-02 | 2011-04-19 | Array Converter Inc. | Blade architecture array converter |
| WO2010002960A1 (en) * | 2008-07-01 | 2010-01-07 | Satcon Technology Corporation | Photovoltaic dc/dc micro-converter |
| CN102113118B (en) * | 2008-08-01 | 2014-07-30 | 佩特拉太阳能公司 | System and method for utility pole distributed solar power generation |
| WO2010056775A1 (en) * | 2008-11-11 | 2010-05-20 | Pv Powered, Inc. | System and method of determining maximum power point tracking for a solar power inverter |
| US20120042588A1 (en) * | 2009-05-11 | 2012-02-23 | The Regents Of The University Of Colorado | Integrated photovoltaic module |
| US8786133B2 (en) * | 2009-07-16 | 2014-07-22 | Cyboenergy, Inc. | Smart and scalable power inverters |
-
2011
- 2011-08-29 JP JP2013525322A patent/JP5928736B2/en active Active
- 2011-08-29 CN CN201180040268.2A patent/CN103081334B/en active Active
- 2011-08-29 EP EP11754344.7A patent/EP2612433B1/en active Active
- 2011-08-29 DE DE201110053094 patent/DE102011053094A1/en not_active Withdrawn
- 2011-08-29 WO PCT/EP2011/064840 patent/WO2012028589A2/en active Application Filing
- 2011-08-30 TW TW100131043A patent/TW201216604A/en unknown
-
2013
- 2013-02-06 US US13/760,624 patent/US9401662B2/en active Active
Patent Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1529930A (en) * | 2001-10-01 | 2004-09-15 | ������������ʽ���� | Power conversion apparatus, Power conversion system and islanding operation method |
| CN101494385A (en) * | 2009-02-18 | 2009-07-29 | 常州瑞闪新能源有限公司 | Solar photovoltaic parallel inverter control system based on LCL filtering |
Also Published As
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| WO2012028589A3 (en) | 2012-06-07 |
| WO2012028589A2 (en) | 2012-03-08 |
| JP5928736B2 (en) | 2016-06-01 |
| JP2013537025A (en) | 2013-09-26 |
| EP2612433B1 (en) | 2018-10-10 |
| US20130147275A1 (en) | 2013-06-13 |
| DE102011053094A1 (en) | 2012-03-01 |
| TW201216604A (en) | 2012-04-16 |
| CN103081334A (en) | 2013-05-01 |
| EP2612433A2 (en) | 2013-07-10 |
| US9401662B2 (en) | 2016-07-26 |
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